Toronto Math Forum
MAT3342020S => MAT334Tests and Quizzes => Quiz 1 => Topic started by: Guan Zhaoqing on January 28, 2020, 09:55:22 PM

Question:
Write the equation of the circle through 0, 2+2i, and 22i.
Answer:
The circle pass through (0,0), (2,2), (2,2)
So, the circle is centerd at (2,0) and has radius 2.
Thus, the equation would be: (x2)^2 + y^2 = 4
In complex number notation: z2=2, where z is complec number.